001    /*
002     * 
003     * $Revision$ $Date$
004     *
005     * This file is part of ***  M y C o R e  ***
006     * See http://www.mycore.de/ for details.
007     *
008     * This program is free software; you can use it, redistribute it
009     * and / or modify it under the terms of the GNU General Public License
010     * (GPL) as published by the Free Software Foundation; either version 2
011     * of the License or (at your option) any later version.
012     *
013     * This program is distributed in the hope that it will be useful, but
014     * WITHOUT ANY WARRANTY; without even the implied warranty of
015     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
016     * GNU General Public License for more details.
017     *
018     * You should have received a copy of the GNU General Public License
019     * along with this program, in a file called gpl.txt or license.txt.
020     * If not, write to the Free Software Foundation Inc.,
021     * 59 Temple Place - Suite 330, Boston, MA  02111-1307 USA
022     */
023    
024    package org.mycore.access.mcrimpl;
025    
026    import org.jdom.Attribute;
027    import org.jdom.Element;
028    import org.mycore.parsers.bool.MCRCondition;
029    import org.mycore.parsers.bool.MCRConditionVisitor;
030    import org.mycore.parsers.bool.MCRParseException;
031    
032    /**
033     * Implementation of a (ip xy) clause
034     * 
035     * @author Matthias Kramm
036     */
037    class MCRIPClause implements MCRCondition {
038        private MCRIPAddress ip;
039    
040        MCRIPClause(String ip) throws MCRParseException {
041            try {
042                this.ip = new MCRIPAddress(ip);
043            } catch (java.net.UnknownHostException e) {
044                throw new MCRParseException("Couldn't parse/resolve host " + ip);
045            }
046        }
047    
048        public boolean evaluate(Object o) {
049            MCRAccessData data = (MCRAccessData) o;
050            return (data.getIp()!= null)&&(this.ip.contains(data.getIp()));
051        }
052    
053        public String toString() {
054            return "ip " + ip.toString() + " ";
055        }
056    
057        public Element toXML() {
058            Element cond = new Element("condition");
059            cond.setAttribute("field", "ip");
060            cond.setAttribute("operator", "=");
061            cond.setAttribute("value", ip.toString());
062            return cond;
063        }
064    
065        public Element info() {
066            Element el = new Element("info");
067            el.setAttribute(new Attribute("type", "IP"));
068            return el;
069        }
070    
071        public void accept(MCRConditionVisitor visitor) { 
072            visitor.visitType(info());
073        }
074    };